package com.thread.lesson.lock;

/**
 * @Author: Mr.Xi
 * @Description:
 * @Date: Create in 15:00 2021/7/5
 * @Modified By:
 */

/**
 * 死锁：多个线程互相抱着对方需要的资源，然后形成僵持。
 *
 */
public class DeadLock {
    public static void main(String[] args) {
        Makeup g1 = new Makeup(0,"灰姑娘");
        Makeup g2 = new Makeup(1,"白雪公主");
        g1.start();
        g2.start();
    }
}

/**
 * 口红
 */
class Lipstick{

}

/**
 * 镜子
 */
class Mirror{

}

class Makeup extends Thread{
    //需要的资源自由一份，用static来保证只有一份
    static  Lipstick lipstick = new Lipstick();
    static Mirror mirror = new Mirror();

    int choice;//选择
    String girlName; //使用化妆品的人

    public Makeup(int choice, String girlName) {
        this.choice = choice;
        this.girlName = girlName;
    }

    @Override
    public void run() {
        //化妆
        try {
            moakeup();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    //化妆，互相持有对方的锁，就是需要拿到对方的资源
    private void moakeup() throws InterruptedException {
        if (choice == 0){
            synchronized (lipstick){//获得口红的锁
                System.out.println(this.girlName + "获得口红的锁");
                Thread.sleep(1000);
            }
            synchronized (mirror){//一秒钟后想获得镜子
                System.out.println(this.girlName+"获得镜子的锁");
            }
        }else{
            synchronized (mirror){//获得镜子的锁
                System.out.println(this.girlName + "获得镜子的锁");
                Thread.sleep(2000);
            }
            synchronized (lipstick){//一秒钟后想获得口红
                System.out.println(this.girlName+"获得口红的锁");
            }
        }
    }
}
